Optionalffrom — sender address (optional; defaults to connected account)
Optionalistructured items (mutually exclusive with ms)
method discriminator: sendTransaction
Optionalmsraw messages (mutually exclusive with i)
Optionalnnetwork — TON chain id (e.g. "-239" for mainnet)
Optionalvuvalid_until — unix epoch seconds
Compact wire form of
AppRequest<'sendTransaction'>. The payload carries EITHERms(raw messages) ORi(structured items), never both.